Seamless trousers

ABSTRACT

Seamless trousers have basically a structure including a first edge without any joining seams thereon, a second edge without any joining seams thereon, at least one dart gap corresponding to the outer upper edge in the upper part of the first edge and the second edge, and the joining region joining the first edge and the second edge on the inside.

SUBJECT OF THE INVENTION

The invention relates to the production of seamless trousers. Theinvention relates in particular to a method for joining each leg portionof the trousers with only one seam, and for producing the trousers whichare seamless on the outside in the desired model. The invention, ofcourse, relates to the trousers which are obtained by this method,especially from denim and gabardine fabric, and the outer edges thereofare seamless.

PRESENT TECHNICAL FIELD

The trousers are the indispensable ready-made garments both in men'swear and women's wear. With the development of the textile and fashionsector, the production of the trousers has experienced significantimprovements in terms of materials, models, and production techniques.However, the main feature of the production of the trousers is that withat least one seam on the inside and outside of a leg, there are at leastfour seams in total. Especially in the trousers made of denim,gabardine, and normal cotton-polyester fabrics, it is almost necessaryto have at least four seams, one on the inside and one on the outside ineach leg. Although the materials such as sweatpants or tights areexcluded, four seams in the trousers bring advantages in terms of modeland usage, but also increase the production costs with increasing massproduction. Moreover, the drawbacks to be mentioned below, such as theseams that are separated and appear during use and the leg deflection,occur as a different disadvantage.

In the state of the art, especially in the denim and gabardine trousers,two seams are used on the inside and outside of a leg. In thesetrousers, the fabric pieces are turned into the trousers by using fourseams. The main reason for this method applied in almost all trousers isthe need for a non-linear joining on the top of the trousers to the legson both sides, in order for the trousers to be sewn in a patternsuitable for the human body. Four fabric pieces which are cut accordingto a pattern for the trousers are joined by sewing on the inside andoutside on the legs. These joints are formed so that the upper parts arewide, and the lower parts are narrow, especially the hip part is of thewider diameter. This allows the desired trousers model to be formed.However, especially in the mass production systems in which even theminutes are particularly important, this increases the production timeas well as the costs. This increase in the costs covers the productiontime, as well as the costs of the mold and defective product and thelabor costs.

Although in the production of the trousers in the state of the art, theseams on the inside and outside of the legs offer the desired modelflexibility, there is the problem of the seam slippage in later use inthe production of the trousers. Especially the outer seam and especiallythe seams made of the polyester thread slip in time. It is seen that theouter edge seams slip especially if the wearer of the trousers pullsthem, buckles, or wears narrower trousers. This spoils the appearance ofthe trousers.

In the production of the trousers in the state of the art, sewing fourfabric pieces inside and outside, which are cut according to the aparticular pattern, causes a kind of production defect which is calledthe leg deflection during or after the production.

In the state of the art, it is seen that the seamless trousers aredescribed in the Chinese patent no. CN200959834. When the patent isexamined in detail, it is seen that this patent relates to a kind oftrousers, such as sweatpants, which is designed for the bicycle users.

In the state of the art, it is seen that an embodiment of a seamlesscloth is described in the Turkish patent no. 2011/01366. When the patentis examined in detail, it is seen that this patent relates to aready-made garment designed mostly for the clothes such as bathrobes orwomen's dresses.

In the state of the art, it is seen that the seamless trousers aredescribed in the South Korean patent no. KR20180069615. However, whenthe patent is examined in detail, it is seen that unlike the patentsubject to the invention, a structure is described, which has thedifferent leg diameters or body diameters and is made of the differentfabric types.

Another patent in the state of the art is the U.S. Pat. No. 4,371,989.Although said patent describes a seamless structure, it is seen that itincludes a trousers design that is used as the dancer or sportsmantrousers and which contains a flexible fat structure.

Another patent in the state of the art is the U.S. Pat. No. 5,081,718.It is seen that the said patent describes a waterproof trousersembodiment that is mostly used for the business purposes.

OBJECT AND DESCRIPTION OF THE INVENTION

The aim of the invention is to develop a method for producing thetrousers that can be used in daily life and made of a single-piecefabric, without seams on the outside of the legs, and the trousersobtained with this production method.

The trousers of the invention is a trousers embodiment which is directedto men's wear or women's wear, can be used in all areas, mostly made ofdenim or gabardine fabrics, but which can also be made of all fabrics,and in which the outer edges of two legs are seamless, and the fabricsare only joined on the inside. Here, it is referred to as “seamlesstrousers” since there is no seam on the outer edge. Said seamlesstrousers can be produced in every model, conforming with the human body.

An advantage of the seamless trousers of the invention is to increasethe production rate especially for the mass productions.

Another advantage of the seamless trousers of the invention is toachieve a reduction in labor and material costs.

Another advantage of the seamless trousers of the invention is that thetrousers can be produced in the desired model thanks to the constructionof the pattern and fabric pieces.

Another advantage of the seamless trousers of the invention is that theproblems encountered in the prior art do not occur, such as the seamslippage at the outer edge and the appearance of the threads.

Another advantage of the seamless trousers of the invention is that theyallow a more precise measure to be achieved in manufacturing. There islittle or no possibility for the sewing workshop to cut and disrupt thehip portion during the overlock seam and side seam.

Another advantage of the seamless trousers of the invention is that thefront and back yoke cuts are single piece, thus reducing the number ofmaterials to be cut. This increases the production rate as well asdecreases the labor.

Another advantage of the seamless trousers of the invention is that thematerial to be cut in the cloth spreading is reduced by at least 20-30%,so the labelling process decreases at similar rates. Thus, the number ofthe labelling elements and the use of materials are also reduced.However, when the number of pieces decreases, the risk of the labellingconfusion during sewing in the workshop is reduced. The productionquality increases.

Another advantage of the seamless trousers of the invention is that thequality of the seams in the back yoke and crotch are also improved.

The figures will be referred to for a better understanding of the deviceof the invention.

DESCRIPTION OF THE FIGURES

FIG. 1 is a drawing of a trouser showing the seams of the trousers ofthe state of the art prior to the seamless trousers of the invention.

FIG. 2 is a schematic drawing showing the fabric pieces used to form thetrousers of the state of the art prior to the seamless trousers of theinvention.

FIG. 3 schematically shows the fabric pieces used to produce theseamless trousers of the invention.

FIG. 4 shows an exemplary conceptual design drawing of the seamlesstrousers of the invention.

REFERENCE NUMBERS OF PARTS, SECTIONS AND STEPS FOR THE PRODUCTION METHODTO HELP EXPLAIN THE INVENTION

-   -   1—Trousers        -   1 a—First piece        -   1 b—Second piece        -   1 c—Third piece        -   1 d—Fourth piece        -   1 e—Curved edge cut        -   1 h—Dart        -   1 k—Joining region        -   1 m—First edge        -   1 n—Second edge    -   2—Trousers leg    -   3—inner edge seam    -   4—Outer edge seam    -   100—Cutting the fabrics according to the seamless trousers        pattern    -   110—Bringing the fabrics together on the joining region    -   120—Joining the fabrics by sewing on the joining region    -   130—Sewing the dart regions

DETAILED DESCRIPTION OF THE INVENTION

The seamless trousers of the invention are primarily designed for thefabrics made of the cotton-based threads, such as denim or gabardine.However, it can be applied not only for the cotton-based threads, butalso for all types of trousers woven from the polyester or otherartificial threads, woven from other types of threads, knitted, or madeof non-woven fabrics.

In order to understand the seamless trousers of the invention, it isuseful to look at the drawings showing the classic trousers and trousersmain parts in the state of the art shown in FIG. 1 and FIG. 2. In thestate of the art, a pair of trouser (1) consists of a combination offour parts, comprising the first part (1 a), the second part (1 b), thethird part (1 c) and the fourth part (1 d). The combination of the firstpiece (1 a) and the third piece (1 c) or the second piece (1 b) and thefourth piece (1 d) form the trousers leg (2), that is, the partsreceiving the human leg. Of course, the suitable patterns are preparedto form these four parts and these patterns are used for sewing. Thepatterns in the state of the art need not be shown here. In the classictrousers (1) in the state of the art, the four-piece components arejoined with the inner edge seam (3) on the inside and the outer edgeseam (4) on the outside. These trousers (1) include a curved edge cut (1e) especially in the outer edge (if desired, in the inner edge) for theadaptation to the human body. By joining this curved edge cut (1 e) withthe outer edge seam (4), the trousers of suitable model can be produced.However, the above drawbacks or disadvantages arise in the production ofthese classic trousers.

The seamless trousers of the invention are referred to as “seamless”especially since there is no seam on the outer edge as mentioned above.Since the seamless trousers of the invention are basically the same typeof the ready-made garment, here they are also referred to as thetrousers (1) and given the same number. However, the details aredifferent. The parts of the seamless trousers (1) of the invention andthe sewn final shape thereof are shown in FIG. 3 and FIG. 4 as theconceptual designs. It is not necessary to show the patterns of thistrousers.

The seamless trousers (1) of the invention have basically a structurecomprising a first edge (1 m) without any joining seams thereon, asecond edge (1 n) without any joining seams thereon, at least one dartgap (1 h) corresponding to the outer upper edge in the upper part ofsaid first edge (1 m) and said second edge (1 n), and the joining region(1 k) joining said first edge (1 m) and said second edge (1 n) on theinside, and the outer edges of the trousers are seamless.

The seamless trousers (1) of the invention form the trousers legs (2)when the first edge (1 m) and the second edge (1 n) are joined on thejoining region (1 k). The joining region (1 k) is the fabric portions inwhich the first edge (1 m) and the second edge (1 n) are joined bysewing. The seam shape is where the first edge (1 m) and the second edge(1 n) are brought together and joined. With this shape of the trousers(1), there is no need to be joined at the outer edge. However, in orderto adapt to the human body, the part called “dart (1 h)” in the sectoris located on the outer edge of the trousers (1) as a result of joiningthe first edge (1 m) and the second edge (1 n) so that said dart (1 h)is located on the first edge (1 m) and the second edge (1 n) in themiddle upper part. The dart (1 h) may particularly not be on theflexible fabrics, if desired.

For the production of the seamless trousers (1) of the invention, thefollowing basic steps will be sufficient:

Cutting the Fabrics According to the Seamless Trousers Pattern (110)

The fabrics to be sewn for the trousers are cut to be the first edge (1m) and the second edge (1 n) according to the pattern.

110—Bringing the Fabrics Together on the Joining Region

The first edge (1 m) and the second edge (1 n) cut for the trousers arebrought together to be sewn on the joining region (1 k).

120—Joining the Fabrics by Sewing on the Joining Region

The first edge (1 m) and the second edge (1 n) for the trousers arejoined by sewing the joining region (1 k) of the parts of the first edge(1 m) and the second edge (1 n).

130—Sewing the Dart Regions

The dart (1 h) gaps in the first edge (1 m) and the second edge (1 n)are sewn by bringing them together. If desired, the dart (1 h) gaps canbe sewn before bringing the fabrics together. If desired, the dart (1 h)is not formed and sewn based on the fabric and pattern shape.

By seaming the seamless trousers of the invention on the joining region(1 k) on the inside, the trousers can be produced in the desired shapeand in the desired model.

APPLICABILITY OF THE INVENTION TO THE INDUSTRY

Although the seamless trousers of the invention are preferred for thedenim and gabardine type of fabric and trousers, they can be used in alltypes of daily use trousers, suits, work clothes and even sportswear.

1. Trousers with a seamless outer edge, characterized in that thetrousers have a structure comprising a first edge without any joiningseams thereon, a second edge without any joining seams thereon, at leastone dart gap corresponding to an outer upper edge in an upper part ofsaid first edge and said second edge, and a joining region joining saidfirst edge and said second edge on the inside, and the outer edges ofthe trousers are seamless.
 2. The trousers according to claim 1, whereinthe seamless trousers have a structure forming trousers legs when thefirst edge and the second edge are joined on the joining region.
 3. Thetrousers according to claim 1, wherein the joining region is theportions of the fabric in which the first edge and the second edge arejoined by sewing.
 4. The trousers according to claim 1, wherein thetrousers include at least one dart located on the first edge and thesecond edge in a middle upper part.
 5. The trousers according to claim4, wherein the dart is located on the outer edge of the trousers as aresult of joining the first edge and the second edge.
 6. The trousersaccording to claim 4, wherein the dart may particularly not be on theflexible fabrics.
 7. A method for producing seamless trousers,characterized by the following steps: cutting fabrics according to aseamless trousers pattern; bringing the fabrics together on a joiningregion; joining the fabrics by sewing on the joining region; and sewingdart regions.
 8. The method for producing the seamless trousersaccording to claim 7, characterized in that it comprises the step ofcutting the fabrics to be sewn for the trousers according to the patternto be the first edge and the second edge in the step of cutting thefabrics according to the seamless trousers pattern.
 9. The method forproducing the seamless trousers according to claim 7, characterized inthat it comprises the step of bringing together a first edge and asecond edge cut for the trousers to be sewn on the joining region in thestep of bringing the fabrics together on the joining region.
 10. Themethod for producing the seamless trousers according to claim 7,characterized in that it comprises the step of joining a first edge anda second edge for the trousers are joined by sewing the joining regionof the parts of the first edge and the second edge in the step ofjoining the fabrics by sewing on the joining region.
 11. The method forproducing the seamless trousers according to claim 7, characterized inthat it comprises the step of sewing dart gaps in a first edge and asecond edge by bringing them together in the step of sewing the dartregions.
 12. The method for producing the seamless trousers according toclaim 7, characterized in that as an alternative, it comprises the stepof sewing the dart gaps before bringing the fabrics together.
 13. Themethod for producing the seamless trousers according to claim 7,characterized in that as an alternative, the dart is not formed and sewnbased on the fabric and pattern shape.